Magazine-gun



2 Sheets-Shet 1. 1 J. L. MGCULLOGH.

MAGAZINE GUN.

' Patented NOV.. 28, 1893.

NTTn STnTns FaTnNT Ormea.

JOIIN L. MCOULLOUGH, OF BROOKLYN, YORK.

MAGAZIN Enc. u N.

SPECIFICATION forming part of Letters Patent NO. 509,548, dated November28, 1893.

Application filed December 12 l 1892. Serial No. 454,926. (No model.)

To @ZZ whom it may concer-n:

Be it known thatI, JOHN L. MCGULLOUGH, a citizen of the United States,and a resident of the city of Brooklyn, in the county of Kings and Stateof New York, have invented certain new and useful Improvements inMagazine- Firearms, of which the followingis a specication.

My invention relates to improvements in magazine lire-arms employingfixed ammunition, or which may employ fixed ammunition, and one of theobjects of the invention is to provide the gun with what may be called ashell magazine and means for automatically feeding the discarded emptyshells from the chambered carrier into this magazine, one by one, as thechamber in the carrier is brought into register with the receiving endof said magazine.

The invention will be fully set forth hereinafter and its novel featurescarefully defined in the claims.

In the accompanying drawings-Figure l is a sectional elevation of aportion of a gun embodying my invention. This view shows only the partsof the gun at and adjacent to loading and firing mechanisms. This Viewrepresents the several operative mechanisms in the positions they occupyimmediately after firing. Fig. 2 is a similar sectional view of theoperative parts of the gun, showing the positions of these parts whenthe gun is cocked but before the cartridge is forced into the barrel bythe breech bolt. Figs. 3 and3 are transverse sections substantiallyalong the respective lines 3, 3 and 3a 3a in Fig. l. Figs. 4 and 4n arefragmentary sectional views illustrating the device whereby the gun isadapted for using cartridges of different lengths. Fig. 5 is a plan Viewof the lower part of the frame, illustrating the means for rotating thechainbered carrier or cylinder. Fig. 6 is a plan view of a portion ofthe operating slide, detached. Figs. 7 and 7n are, respectively, an endanda side elevation of the chambered cylinder or carrier. Figs. S and 3are, respectively, a vertical longitudinal section, and a horizontallongitudinal section, of the breech bolt, on a larger scale than theprincipal iigures; and Fig. Sb is a transverse section at line 3b SbFig. 8.

1, is the gun stock, 2 the barrel, and 3 the metal frame between andconnecting the stock and barrel. The latter is represented as screwed,at the breech, into the front end of the frame 3. In a recess in theframe is rotatively mounted a cylindrical carrier, 4, having an oddnumber (by preference) of chambers, 4, As herein shown the carrier hasiive chambers, and the object in employing an odd number is that whenone chamber is at the index point, or aligned axially with the bore inthe barrel there will be two chambers at the bottom of the carrier sideby side, and in the same horizontal plane. The purpose of this will behereinafter explained. The carrier is mounted on a removable pin, 4b.

For simplicity and convenience in describing the construction andoperation of my gun, I have called the point at which the chamber in thecarrier 4 stands When aligned with the bore in the barrel, the indexpoint, this being the term employed technically in the trade.

Mounted under the barrel and lying side by side are the cartridgemagazine,5,and the shell magazine, or receiver, 6, both tubular andaligned with the respective lowerinost chambers in the cylindricalcarrier 4. The cartridge magazine 5 will have a spring (5a in Fig. l),such as is usually employed in magazines of this class, to force thecartridges, one by 0ne,into the chambers of the rotating carrier, butthe magazine 6, which receives the rejected cartridge shells from thecarrier 4, will be merely a plain tube.

Mounted in guides below the inagazines,is the operating slide, 7,provided with a grip 7X. By drawing back this slide the breech bolt, 8,is drawn back and the cartridge shell (x in Figs. l and Sa) drawn fromthe cartridge chamber, 2a, in the barrel back into the indexed chamberof the carrier 4; the hammer,

9, is forced back to full cock, and the cylin- IOO the upright branchesof which embrace the 1' breech bolt 8 and loosely engage recesses, 8X, 5

in the sides thereof. This fork (seen in plan in Fig. 4a) imparts thenecessary endwise motion to said bolt, which has slide-bearings in theframe 3 in line with the bore in the barrel. To enable the breech boltto resist the recoil, a pawl, lO, is provided, adapted to engage or takebehind a shoulder on the bolt when the latter is driven forward to itsfull extent; and the loose engagement of the branches of fork 7 with thewider recesses in the bolt, permit the forli to move back far enough totake under and raise said pawl out of engagement before the fork movesback the bolt. The pawl lO is pressed down by a spring 10ad on theframe. IVhen the bolt 8 is drawn back, it presses back the hammer 9, andsets it at full cock, as in other guns of this class.

The breech bolt contains the firing pin, 8a, arranged in much the samemanner as in other guns of this class, it being loose '1n the hollow orbore of the bolt and having a slight endwise movement. As herein shownthe tip of the firing pin is adapted for rim-fire cartridges. In thefront end of the breech bolt is iitted a hollow slide, 8b, whichoccupies an enlargement of the bore in the bolt and embraces the forwardend of the firing pin, as clearly shown in Figs. 8 and 8*. In the upperface of the breech boltis a longitudinal slot Sein which plays, as thebolt moves to and fro, a pendent lug 3 on the upper part of the frame 3.The purpose of this construction will be explained. On opposite sides ofthe breech bolt, at its forward end, are secured spring extractors, 8d,seen clearly in Fig. Si. These have beveled, latch-shaped heads, withshoulders to engage the flanged rim on the cartridge shell and draw itout of the chamber in the barrel when the breech bolt moves back. Eachextractor has on its inner face ashouldered projection, 8e, back of thehead, and shouldered recesses 8f are formed in the sides of the slide 8bto receive these projections on the respective extractors when thelatter' are closed in against said slide. Vhen the breech bolt 8 isdriven forward in loading, the front end of the slide 8b drives thecartridge into the bore of the barrel, and the free ends or heads of theextractors 8d are spread apart by inclines, 2b, on the barrel. Thisposition of the parts is clearly shown in Fig. 8a. Then the breech boltis drawn back by the fork 7, the heads of the extractors 8d close on thecartridge shell in the barrel, engage the flange thereon and draw theshell back into the chamber in the rotary carrier 4. At the moment thesaid shell is out of the barrel and housed in the carrier, the slide 8b,(which moves back with the breech bolt) encounters the stationarypendent lug 3, and the further backward movement of the slide isarrested. The extractors, 8d, however, continue to move back, and theshouldered projections Se, on the inner faces thereof encounter theshoulders formed by the recesses in the sides of the slide; theseshoulders being beveled slightly, the effect is to spread the extractorsto an extent sufficient to free their heads from engagement with theflanged rim on the cartridge shell and thus permit the extractors tomove back far enough to clear the rotary carrier leaving the shelltherein. There will be sufficient play of the parts to allow of thisdisengagement being effected without binding or friction.

When the operating slide 7 has been moved far enough back to effect thewithdrawal of the extractors from the rotary carrier, as abovedescribed, the further and continued backward movement of said slideeffects the rotation of the carrier 4 to an extent sufficient to bringthe next chamber therein to the index point. This movement may beeffected by any known means, but the mechanism herein shown foreffecting it will now be described with especial reference to Figs. 5,6, 7 and 7n.

In the periphery of the cylindrical carrier 4, and extendinglongitudinally thereof, are ve straight grooves, 4C, and five obliquegrooves, 4C", connecting the opposite ends of the adjacent straightgrooves in such a manner as to form a zigzag about the cylinder. Pivotedat 7b on the lower face of the operating slide 7, is an arm, l1, whichextends forward and carries at its free end a stud lla, which extends upthrough a lateral slot, 7c, in the operating slide and is adapted toengage the grooves in the lower face of the carrier 4, when the slide ismoved to and fro; and another stud, 1lb, which projects downward fromthe arm. These two studs are really formed by one pin fixed in the armll. It will be obvious that if a stud were simply fixed in the operatingslide 7, it would not properly actuate the carrier by engagement of thegrooves therein, because after the stud l1a has passed forward along astraight groove 4 in the carrier, it must be shifted laterally to theextent of its diameter in order to enable it to properly engage theoblique groove 4cx and rotate the carrier on its next backward movement.To so shift the stud l1, an automatic spring switch device, best seen inFig. 5, is employed. This device comprises an angular switchplate, 12,pivotally mounted in a recess in the lower part of the frame 3, at 12X.This plate is held in the position seen in Fig. 5 by a spring, 12, Theposition of the pendent stud 11b, when the operating slide 7, is at theend of its forward movement, is indicated by dotted lines in Fig. 5.l/Vhen the slide 7 is drawn back, the stud llb is deflected laterally bythe oblique forward end of' the switch plate l2, the arm ll swingingabout its pivot, until the apex at 12x is reached. At this point theupper stud, Il, enters the open front end of the oblique slotin thecarrier 4, and in the further movement of the operating slide, the lowerstud, 1lb, moves along the oblique wall, 3b, in the frame, displacingthe switch plate sufficiently to permit it to pass. The purpose of theoblique wall 3b is in part, to hold the arm l1 from swinging laterallywhile the carrier IIO IZO

is being rotated, and in part to compensate for the lateral swing ofsaid arm at the first part of the movement and to bring it again intoline with the axis of the operating slide, so that when the latter isnext moved forward the stud 11a may properly enter and follow a straightgroove in the carrier 4. As the stud 111 moves forward it displaces theouter end of the switch plate, which is again moved back to the positionseen in Fig. 5,by its spring, as soon as the stud passes it As the bos'sof the stud 11a is at the bottom of the slot 7c when the arm 11 isaligned with the operating slide 7, it will be understood that the arm11 cannot swing in that direction and the stud 11b must displace theswitch plate on its return movement to the front, as stated above. Whenthe operating slide moves forward, a plunger, 7 ax, on the fork 7,enters one of the lower chambers in the rotary carrier 4, from the rear,and pushes the discarded shell left therein from said chamber into theadjacent end of the shell magazine 6 which is always in alignment withsaid plunger. Each shell, as it enters the rear end of the magazine 6,pushes the shells in front of it forward. The cylindrical carrierrotates between parts of the frame 3 in such a manner that the ends ofthe chambers therein are closed except at the points where access isrequired. Forexample, the plunger 7 mi passes through an aperture in aninclosing part of the frame before reaching the chamber containing theshell.

In the cartridge magazine, 5, a part of which is seen in section in Fig.1, is a follower, 5b, interposed between the spring 5L and thecartridges. This follower moves back toward the rear end of the magazineas the cartridges pass out, one by one, to the carrier 4; and after thelast cartridge has been thus delivered the end of the follower entersthe chamber in the carrier and locks the latter against rotation, thusmaking it necessary to refill the magazine before the gun can be againfired. This construction is mainly designed as a warning to the userthat the magazine is empty, and it may be omitted, if desired.

When it is desired to refill the magazine, the follower' 5h is drawnoutward, (and the spring 5fL thereby compressed,) by means of a rod, 5c,which plays through a laterally projecting lug, 5d, on the follower andhas on its rear end a button or collar, 5. By drawing on the rod, thisbutton engages the lug on the follower and draws the latter back. Theneck connecting the follower with the lug plays along a slot in themagazine 5.

In order to lock the trigger, 13, and prevent it from being pulled untilthe operating slide shall have been pushed forward to the full extent,the trigger is prolonged upwardly and has on its inner end a laterallyprojecting stud, 13, the lower face of which is a very little below theupper face of the operating slide 7, as seen in Fig. 1. When the slideis drawn back, its rear end wipes under the stud 13a, and thus preventsthe trigger from being operated until the slide 7 is pushed forwardagain. On the other hand, in order to prevent the operating slide, 7,from being drawn back while the hammer 9 is at full cock, another deviceis employed which will now be described. Pivoted in a recess in thetrigger, is a pawl, 14, the head of which bears on the heel of thehammer 9, and is held up to the hammer by a spring 14', fixed on theframev and bearing at its free end on a heel 14, back of the pivot ofthe pawl. Another, weaker spring, 14, is interposed between the head ofthe pawl and the trigger 13. Now, when the operating slide is moved backand takes under the stud 13a', which it does at the beginning of themovement of the slide, and the hammer 9 is then cocked by the continuedmovement of the said slide, the head of pawl 14 will be forced back byreason of the fact that the notch, 9a, in the hammer,

occupied by the pawl at full cock, is farther radially from the pivotalaxis ot the hammer than the point 9b, where the pawl bears on the hammernormally, and as the trigger cannot yield, the light spring 14, will becompressed and the heel of the pawl14 will stand free from the shoulderat 13, on the trigger, whereon it bears normally. The hammer being nowat full cock and the spring 14c under tension, if the operating slide bepushed forward to the full extent, the rear end of the slide 7 will passout from under the stud 13a on the trigger, and the spring 14c willinstantly depress the inner end of the trigger until the stud 13a standsdirectly behind the beveled end of the slide, as indicated by the dottedcircle in Fig. 1, and thus offer an obstacle to the drawing back of theslide. Of course the extent of this movement of the trigger by thespring14c is limited by the contact of the tail of the pawl 14 with theshoulder 13c on the trigger.

It is customary to provide cartridges of the same caliber but of two ormore different lengths, the longer containing the heavier charges ofpowder, and it is desirable to provide a magazine gun which is adaptedto use cartridges of different lengths. This is effected in the gundescribed herein in the manner following. The cylindrical carrier 4 ismade of such length that it will receive and house in its chambers thelongest cartridge to be used, and a means is provided for adapting it tothe shorter cartridges. This latter device is clearly illustrated inFigs. 4 and 4a. In the frame 3, is set a screw 3d, which is aligned withthe cartridge magazine 5. This screw 3d is adapted to enter the chamberin the carrier 4 which is in alignment with the magazine and serves as astop to limit the extent to which the shorter cartridge can enter thesame. As the cartridges in the magazine follow each other closely, it isessential that the front end of the cartridge in the chamber shallcoincide with the front end of the carrier or the latter will notrotate. 0f

IOO

course the screw 3d is only essential when cartridges shorter than thecarrier are beingV used. The carrier 4 has a circumferential groove 4,in its rear end to provide a way for the end of the screw 3d and allowthe cylinder to rotate.

The mechanism in the frame 3 will be housed in or inclosed by sideplates, 3C, secured to the frame in the usual manner.

In Fig. l the breech bolt 8 is represented in elevation, and in Fig. 2it is represented in longitudinal section. In these views the carrier 4is arranged to rotate to the right with respect of a person aiming thegun, and the cartridge magazine 5 will stand, therefore, directly behindthe shell magazine 6; but in Fig. l the latter is broken away to exposea part of the magazine 5, which is also broken away in part to show itsinterior.

The muzzle portion of the gun has not been illustrated as it has nonovel features.

Having thus described my invention, I claim l. Amagazinegunhavinganintermittently rotating chambered carrier for carrying thecartridges from the magazine to the index point, a magazine to receivethe empty shells arranged in front of the carrier, and means fordischarging the empty shells from the carrier into said shell magazineor receiver, as set forth.

2. Amagazinegunhavingan intermittently rotating chambered carrier forcarrying the cartridges from the magazine to the index point, and meansfor simultaneously driving a cartridge from the carrier into the chamberin the barrel and for driving an empty shell from said carrier into ashell magazine, as set forth.

3. In a magazine gun, the combination with the barrel, a cartridgemagazine, and a shell magazine or receiver, of a rotatable carrierhaving chambers adapted to be brought into alignment, simultaneously,one with the bore in the barrel and two others into alignment,respectively, with said magazines, an operating slide, means, actuatedby the slide in its forward movement for driving a cartridge from saidcarrier into the chamber in the barrel and for driving an empty shellfrom the carrier into the shell magazine, and means actuated bythe slidein its backward movement for first drawing the empty shell from thebarrel into the carrier and then rotating said carrier, as set forth.

4. In a magazine gun, the combination with the barrel, the chamberedcarrier mounted to rotate with its axis parallel with that of thebarrel, a tubular cartridge magazine arranged parallel with and belowthe barrel, the bore in the barrel and the said magazine being adaptedfor alignment with chambers in the carrier, as set forth, a breech boltadapted to pass through the indexed. chamber of the carrier and drivethe cartridge therefrom into the chamber in the barrel, a plungerdriving the empty shell from a chamber in the carrier, and means forimparting a longitudi nal reciprocating movement to said breech bolt andplunger, as set forth.

5. In a magazine gun, the combination with the frame, and a chamberedcarrier therein to convey the cartridge from the magazine to the indexpoint, of the breech bolt, mounted in sliding bearings in the frame andslotted longitudinally to receive a pendent lug on the latter, saidbreech bolt being provided with expanding spring extractors, a firingpin, and a slide adapted to expand or spread the extractors whenarrested by the said lug during the withdrawal of the breech bolt,substantially as and for the purpose set forth.

6. In a magazine gun, the combination with the barrel, having oppositeexternal inclined surfaces 2b at the breech, of a breech bolt 8,provided with two spring extractors 8d, said extractors having theirheads projecting beyond the end of the bolt and adapted to ride up onsaid inclined surfaces, substantially as set forth.

7. In a magazine gun, the combination with the barrel, the frame, thetwo tubular magazines 5 and 6, arranged side by side below the barrel,the rotatively mounted, chambered carrier, in the frame back of thebarrel and magazines, and the breech bolt, 8, back of said carrier andmounted in the frame in line with the bore in the barrel, of theoperating slide, and the fork, 7, carried by said slide and engagingrecesses in the breech bolt, said slide being provided with a plunger,7, aligned with the magazine 6, substantially as set forth.

S. In a magazine gun,the combination with the frame, the barrel, themagazine, and a chambered carrier for carryingthe cartridges from themagazine to the index point, of an adjustable stop at the back of saidcarrier and in line with the magazine to limit the extent to which acartridge from the magazine may enter the chamber in the carrier,whereby cartridges of different lengths may be employed.

9. The combination with the frame, and the rotatively mounted chamberedcarrier 4, in the frame, said carrier having in its peripherylongitudinal straight grooves 4, and oblique connecting grooves, 4, ofthe operating slide 7, an arm l1, pivotally mounted on said slide andprovided with an upper stud 11a, adapted to engage the groovesin thecarrier, and a lower stud 11b, adapted to engag: 't switch plate on theframe below, of the said witch plate, l2, set in a recess in the franAy"ftcent to an oblique wall 3b, thereon, and a spring which holds therear end of the switch plate up to said wall, substantially as setforth.

10. The combination with the operating slide, of the trigger 13 providedwith a stud 13rh to take over the slide when the latter is -drawn back,the pawl 14, pivoted on the trigger and having a heel 14h, the spring14a, bearlng on the head of the pawl, the lighter IZO spring 14C,arranged between the head of the In Witness whereof I have hereuntosigned pawl and the trigger, and the hammer 9, havmy name in thepresence of two subsembmg ing a cooking notch 9iL which is farther dis-Witnesses.

tant, radially, from the pivotal axis of the JOHN L. MCCULLOUGH. 5hammer than the point 9b, where the paWl Witnesses:

rests normally thereon, substantially as set HENRY CONNETT,

forth. PETER A. Ross.

